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000844245 1001_ $$0P:(DE-Juel1)168420$$aWu, Xiaochao$$b0$$eCorresponding author$$ufzj
000844245 245__ $$aAnalysis of the effects of different carbon coating strategies onstructure and electrochemical behavior of LiCoPO4 material as a high-voltage cathode electrode for lithium ion batteries
000844245 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2018
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000844245 520__ $$aThe olivine polymorph LiCoPO4 was synthesized by solvothermal and a subsequent annealing process. Carbon free, ex-situ carbon coated and in-situ carbon coated materials were prepared. With the addition of citric acid in the solvothermal reaction, a carbon layer was coated via an in-situ approach. To systematically compare the different carbon coating routes, the structure and morphology of the LiCoPO4 materials were investigated by XRD, Raman, and SEM. HAADF-STEM combined with EDX was applied to analyze the homogeneity of the carbon layer and corresponding antisite defects. Electrochemical properties were analyzed by half-cells measuring cyclic-voltammograms, charge/discharge cycling behavior stability and rate-capability. It was found that the in-situ carbon coated LiCoPO4/C exhibited a superior electrochemical performance due to the relatively uniform and complete surface-layer formation. As a result, an appropriate carbon layer improves the electronic and ionic transport properties, ensures fast electron-transfer kinetics at the electrode particle surfaces and suppresses unwanted side reactions with the electrolyte
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000844245 7001_ $$0P:(DE-HGF)0$$aRohman, F.$$b1
000844245 7001_ $$0P:(DE-Juel1)174171$$aMeledina, Maria$$b2$$ufzj
000844245 7001_ $$0P:(DE-Juel1)161208$$aTempel, Hermann$$b3$$ufzj
000844245 7001_ $$0P:(DE-Juel1)161348$$aSchierholz, Roland$$b4$$ufzj
000844245 7001_ $$0P:(DE-Juel1)157700$$aKungl, Hans$$b5$$ufzj
000844245 7001_ $$0P:(DE-Juel1)130824$$aMayer, Joachim$$b6$$ufzj
000844245 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b7$$ufzj
000844245 773__ $$0PERI:(DE-600)1483548-4$$a10.1016/j.electacta.2018.05.067$$gVol. 279, p. 108 - 117$$p108 - 117$$tElectrochimica acta$$v279$$x0013-4686$$y2018
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